All participants in this study will be healthy adult volunteers. Eligibility criteria for the study are: (1) being 18-40 years of age; (2) being able to speak English and having basic English reading and writing skills; and (3) not having taken a genetics course in the past five years. Both men and women will be included in the study. We will exclude women in their last trimester of pregnancy from the study, due to the small chance of study participants tripping or bumping into walls.